package com.atguigu.web;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.SQLException;

public  abstract class BaseServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }

    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
     resp.setContentType("text/html;charset=UTF-8");
        req.setCharacterEncoding("UTF-8");
        String action = req.getParameter("action");


        try {
            //        获取action鉴别字符串，获取相应的业务，方法反射对象
            Method method = this.getClass().getDeclaredMethod(action,HttpServletRequest.class,HttpServletResponse.class);
//             调用目标业务，方法
            System.out.println(method);
            method.invoke(this,req,resp);

        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }

    }
}
